Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '940f4945811f8ce35c58d134685566bf92f9c5d43507d0176d87d4ad12c9ff03' 
  AND token = 'uddVf5BZ733SJ94NLpG8k5i7aeZxKWw/wm6qMeUva4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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