Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38000d94047a511580340454f81304c1495165fec01c00682c173f33982801ee' 
  AND token = 'UIZMwUHDMSIIYORpFZBQGLpTHkyEALdfyH41n9BAw7o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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