Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75ddce17f4e5f47f476ac1bfc25f14e4929293fca896d8686da8b7ed70ec9f0a' 
  AND token = 'ee4dexNUm+hNdb+4kr64W+hP53uhVcy++Z8PLC/getA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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