Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95926ee26adb8f7bab16904772bf1e8b96c963a428bc71c4f672c96c8d01cf36' 
  AND token = 'ElT7Vg8B4UsfxiXz88H5V1uxIRCYZ5iupqnV32aa41Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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