Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8d2711a52914aa201f8a9c514165de1fa01156528f691fcf96903561ce2cdf81' 
  AND token = '7G8LRQMAhYCYU0sl0oliEHjVS0SZSfMgEZIKrek/07E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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