Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e6bb829e0b8e0c9b6f58920a60c021b7794c28170e8e83b4a597d572ccfb00fe' 
  AND token = 'sgdSuwN5gdUjPFKCIofG6HuASoisagF1wBosNCged6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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