Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd69719254865986fe72965959128d281572f55e8a19063a852d9efd2283244c0' 
  AND token = 'm/G+9JeJULCPU97da0D0Ox2H8Y4nJHfeuskCouV6z4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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