Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bda810e07647609ff0f1a09c478e5a207440718f11b0399d4dabb60d9623606c' 
  AND token = 'As8Pki3/9D5fYOcaxB8dy+otmYQ27H/Jnm/d/paAB30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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