Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23b7ebea2d6b75e3f895f2c71d628512131fc52cde8ee76d059bdc9c50b2b61b' 
  AND token = 'THcrDiEkpFRfT8rCEj5Q2unqhsmySMBO361g5AbqbG4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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