Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f07fb62b1ccfd2f252a26e9ee1381ebb7ce792fec0b5397b84d6b6decad14a6c' 
  AND token = 'wVbGRRK23L4+hmBNPrjaA0Cz/N2bY8lwpG55LvcsE7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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