Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fac79de485ee24cc976a0f89d2c49924cb1f5d09482cf6aa626700476c477064' 
  AND token = '800eZUATgUzb7cRjUu83E8Eu9xvmS61w+SoVQiKYYwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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