Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b868fc7b5b7cc90c1eb04481ff98fe9888a0f7f9e78d485715c771aeec0ec84' 
  AND token = 'qgzxDDeojp6bxmAix30urZEjNZsswTbvrc4HEjMe1Hk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00133

JSON explain

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