Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00e70995dc916ec2c1be979cac0ad7a1b7d0a8d89844d2063cf956c6b3120b5e' 
  AND token = 'ySDo8MiNzLasXddf2P32i5gCVRzL7RGwQP1sX6BPqkw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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