Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bca00e6bc5224d154f3ccb05f1b7ab3296ba1afd0316b5676c69822d210947be' 
  AND token = 'EFAPNAKcAhPRrUwnNAi6GYCziDVUFoMUyiOsD/H0a78=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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