Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1041ed2f288515b314e5d68394055819865aa93356e876c76827887d1a2b0183' 
  AND token = 'N7WCwD6Aron/+qwzXqu7aaYdC1MgbpDRMjaJR0mod44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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