Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0ce713784a2a8c6a3f1d6dff69aa586beb24a0b9acdb09f6a0708ec8196181c1' 
  AND token = 'hbUD6XawxnX4S10DX0uRn0SD1CQ2rhdlWYgMt9AFC/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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