Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac7960b716ddf5ad1d736376326f9d67ed4ae8b9a27a4869ff9707065e415b86' 
  AND token = 'XPzftqUGjqv6vSeuZ3ZQvAEikWQubT7iQQALYEXAW2c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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