Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd938179cb26b74d8275383deb18d7c06286fe98236ed0984f3b2cb4bd8107c46' 
  AND token = 'zy2Wlitw/Meuqs0QzyhBr4LqBSHfZC1jaI1eE9txW8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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