Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'ad573338728e87bee5bdace2178e2430ab5995d4611e7538e7bd058e4cc33fad' 
  AND token = 'wkfJF1qylnyjQDtd66ljIR39l3qT6toqFl6zzU/z4Fc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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