Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe29b8dd7d30b4a1ee8a54793b381308026abcb85d97e7fab430d205bc9cbe26' 
  AND token = '+SkZSLakD8RCjEYMI4M9x4m3av5kUFHxNWOMw+xSFv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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