Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80f35846e4bb08852ad05e167d3d342e0001efc695adfbc09a0b772ad4232d6d' 
  AND token = 'UZjWleEg8viUb/eR02C9nHpWjmt/KiFFSAfklgjGk7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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