Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54d2d2de3b53761ccaa76a550835a9c7132223e141f82c3d40efcd9f091c555b' 
  AND token = 'ooV10ZJuT6NaCPGQrrz8k7sXviRtJZo0fGK+4CI04CM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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