Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc3d8e0792f937eb1200c3d3773bde6c11587dbec3bdf1e01acb138d559d0b5a' 
  AND token = 'sA2Vo+1DvbMlJLa2p6KzsVPe1U7FiNKdeMFJhKFjh64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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