Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c89de3c11bd62a5fee2f2e8f76f6e2524f8005297310752c4f23e66fea5da5bf' 
  AND token = 'zio1XR0xeTT6X59QE+YgcFaRHa3oVGLXIWKIFAZLtA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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