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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'db3489eb52efd10d46bf8413a6bd1183c2e10c5886d73aee89b0e63d22c9f4a9' 
  AND token = 'DuzT8eHsY7N9oh7EQhyc8/994Tx9Eb1gA8JYjp6fhH4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}