Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01c6ff175a0022e52752a72e8f0bd9d3944f2cb5c92632f4dbe2edb09337942d' 
  AND token = 'iz612UnjYgQokw2xXJFEFyaAFo+3B+qDjJrQX+1xa9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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