Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '652f3504d3c23e8859fb887ca2a97d15aabeee77f7e3e1871e4e6b5c9635ba4c' 
  AND token = 'VrGNxSOICbPgEDMAy/6vg1tigbBNCn3PGeew6ibTnO4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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