Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecf5826842d49f8faf2e848a570bdec26a4ff60db86a6b3baa682164db55deb4' 
  AND token = '5jVnuptqUk4vvr9ZXZXXbwI86yS90EjernSK1plUHXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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