Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9901fbd6d8677d9d841d7518a8404f5d83a12615bcc4313cae06d94310fe9bb9' 
  AND token = 'uTP071CX7rlOzvkFA+tuNAExucvfJnH5nZnOVSKb0JY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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