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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '362bab1eaee6184e44b1cec72881ac36fb65feaab90a59a8084f5e459beaf7eb' 
  AND token = '1Jil/twgkR6C1bAnp7IF7whiz8ufNeJ/rPyoydY6rfU=' 
  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"
    }
  }
}