Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bbb384badfd4393166cfe1ff89140a7e0841fc0fdaad6a1f0e17059e1e17462' 
  AND token = 'dIVxr/CpbggvFPw4/XgJ+xywfGfUc6mSMFdSE+UXN3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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