Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c1402addb19334db957f523f3393bf8d5941515f07eb49969540a1b9ba59580' 
  AND token = 'qzb98cjrPwtDn4JjSchJF54a2+VdOI9efeJP2Fv1tb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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