Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '202dc7c8381f107d30b6a1158834e425261fb2a5e3b1c85b5255ed9acbe01c43' 
  AND token = 'bCq/uppXK/ViLK3jPjqtsG5XWSVK834hlacL3Rc609E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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