Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08ed7047600df5e53fad6f4abe11daf90b706a86dfe5eafe22aeb7ac64be0763' 
  AND token = 'euzME2Qdb/Etc+jUmBH4YUGdb6m+I3SwNvSur4Wtbw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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