Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5cb2e3239010ec0648c9c5c2e25319d34abcd26538178790e0f51405f3855a7' 
  AND token = '5924TEwA/GAanZz+3ih9CJHIlYyXBIWuI9I6UgdJxDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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