Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '187a6e5190d002a02b349e99fa8a7939239fc6439416b491db034b17200f0bfd' 
  AND token = 'Uz1upaecuvLZ0gZMHZ5B8yCSB5wsn9Y7EnvhsUbnTvQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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