Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '85bf793d01b92eedaddebd4429258b9277926477aefff1728cab5124f68a3a5d' 
  AND token = '0LA6XDxYyhMg1tCHOeeju6fgA3Qi3Qh8xloOjznTH9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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