Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17645ab5aa1a46dee67026107baa08d237823be3e9085ef7811b0fe3d70e85d7' 
  AND token = 'N5/LiU3bf2hlnL3GPX0sVYMKwqAPBq8e0RPAfFwaIDY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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