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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f22dbaa24039854631b7c4bb3e39b55cce819115a7861ba72c46086b12af75db' 
  AND token = 'Pv8vD7PCN264qeqmCvn6sek+4VKbqyQP9O6W3c39oM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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