SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '92efb95ef1190a1452c3c3f8f68796f5be10714248261e7acc59f31e118a074b' 
  AND token = 'YKMBlqPW4OZBBM4nmNHHC89A08aGc6ju9a/QbQ2SVpU=' 
  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"
    }
  }
}