Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e50565f95d12ce9d1196310bb81cebcab5758a24e78d261ab862b6b2664e2662' 
  AND token = 'peK3Cg01zDCh3eUV4mU9Dl8nN1jXNqfNIcjObJAQI6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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