Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd73b8a5cefb88c5a9acd0812fa6a2bf0807585609c9a89168ce4405213c2f85' 
  AND token = 'z/lI8aV/NLBFZD5oCmmG+jIwz4EPEf3wrH7AE93dVzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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