Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a10a9e930f6b5110bc438b24a53c79aff0d942895720169d5845034a0db33e5' 
  AND token = 'xP00xVqsCnLOHktq6aUi+b1jNHPbtoIiUefWWHXeDfY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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