Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ff08de28d981962b13cf1a9eeac9a162b8d545013d92284c91d067a9479cfd0' 
  AND token = 'VEpL+PSHRNdxPLOetoI9lk92GunfDA/zzL96uhww3ic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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