Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2be577a8f230019abf65c98f5b2ebad871d1d52eee8720ac0cf830761747db23' 
  AND token = 'FMf4Dj523Qo9bYrV177miWt1YXqCVlfH9hGhOHOnk3c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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