Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b59df75cdaf59d10dde7610a9df429c6d8eaaec030a38bfcf5b27253e9b24bf7' 
  AND token = 'BNd93P7S4Op1anWFGv03ouxXXzBxM1pqZRFK090dwvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}