Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c8d32bdadf11e77d2f4c0ba80e1452c917a4649e63434eb68de828f506fc1736' 
  AND token = 'O6b8wlKw5PoHkRQHCg2O1WijnCREkv27HazMrO0SCTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00104

JSON explain

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