Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3564b1dcccd2486b2dde1caa9b3153b8085711875a4d155ac1ce4287239753dc' 
  AND token = 'GWcob0wDzfNaTeMxOoH55AvTdQz4LwkqGbf5ei6EEj8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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