Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bb698c2c770ef258406466622a6b285a24cd844eb6645fcd9f1ae0828c6113b3' 
  AND token = 'cbM0iVdMSPq3kIJVuEqECDfYtxLOvVB5F5F6plinvTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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