Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b007a79169f3278c6ae98b141301b14bb0e47b6b595447a53d518dc96233a08' 
  AND token = '+MO6yKvhnOwVu4tatEwRvy27vGpE3q0yQkX2PH5VIkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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