Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7909050095e663dbcf469ad0a94c5b49b0011e54e5da7c292329a977a0650ebf' 
  AND token = 'GLCbq6CaB5GXckQ2jKD/azZ7VLqXDu8fL6eEq29OrMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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