Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ccad13ca69b3ca008ecb5b163d0f508d8626b2453e335862269e3de42ba18bb7' 
  AND token = 'MicM3HY3f49+3n0uZLTewbomHAOfp1cxSjiXHE7Iz4I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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