SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41da82f361c81db38a2b1406c846fbc8321ef86c1fc999a19a7961f24ac33712' 
  AND token = 'QHVYYqK9t4VEjvwbMXIfiyvZGgAGJsAW67W7BAL/4bE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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