Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa1c8b517110358fed34afb16a74fc5d2b07afefc706fc6c7432b2421142bd87' 
  AND token = 'qI/kcRNe9iTKJh+Q3+73Qd16eGg8YOTz55KlYZRZbhU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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