Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7259bc516aeefa4718945751ef9bc7882d57efb39203526657cf47b60138cacc' 
  AND token = 'ltdk9tLvQZG2pziNaPZbcQOlaeqBLpT9OJcMpVoq9Gs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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