Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '01e643f9094ee4c1307028cac25146dcc44325b27698ee3f8ed8029e31cdd6ed' 
  AND token = 'i0yAlZxyMqxBrEFmDMsgDWk5mL/odOQLoSgBm+ct3To=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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