Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8108e630d6ea947e4c410c8da6cdd15194ab872d955ec306a6ca4933241f364' 
  AND token = 'DitHc/RrXZ3OxU+qJ+d/tlkbOtxhaZjhaeftJPO44Tc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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