Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8aa2f3492be37fad9a526ef440ed34fbcf433407b52d25c1b99033012c220c4a' 
  AND token = 'S1EcrW93DGlxTY2U6/8qk4sTb4j/qnHWKhjrBt66VQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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