Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea005dee5a56b63287701763c4b5e82dbc35d7cc9baa03717a6593f7715321c1' 
  AND token = 'mMPa9D2D7FOFGGeFN2fENNM/sfgzeYu3T2hdYzrOlV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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