Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd80534445d4c352d4ce0539c1f3942ca23a8e65283abcee65228f49a2f537676' 
  AND token = 'lfUFHW2rYJC+n8tIG+ZvINHi5RJjI8o6lwE9svoCDbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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