Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04b20da134cebe96e54d8c4784c55720e1d2866837bced5f466ebf0b4ee465de' 
  AND token = 'ZRRTla2gt/PpruPnVH/H72cwDz/eCI6tdtICPWkoDqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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