Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc22f593d9625fa462fd6782a285b786615f0118c9f16a2a54021bf524da49da' 
  AND token = 'WYhpWT9sdkAxL03wOg4xowOoDewkebhL+4h3hkbJeP8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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