Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0cf7bed36ad621f9afb038c256b90edec5ec350b54f31842bf55dd3442bce97f' 
  AND token = 'y3seaUMwQBSWt5/Itdl9liTNBdz3ThkriN5P+TN0oW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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