Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '070ae6316f67f0f33b903a51b154195ba6d50d43f0263b8736ce5e9cde966dfd' 
  AND token = 'VfmPTnBaJOXa8I8pSUgwRCBs4LzAwtie1a/szo9yp54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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