Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aaab812acaeaefdcaf6cb2762f917999743e9740c04d425060b23d0ddc360965' 
  AND token = 'B5bsqwzMkRAr9r3TpBYUT86OGIx2i0sgT/J1ntXeLvM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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