Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '94086a762da5ef34cc271d2c1faff37a709ff1af8396338d331a3edee4b0dbf5' 
  AND token = 'EZq6nGB1fd2ePB6ATlYuRjIO1LU/FGT/gUjahaPkI9A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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