Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aaa5aede15948eb9bd9b39b59f2fb5af2b0e6dc59df4bc0edb1eda17adf986be' 
  AND token = 'IXP2Jpx9NB1E4N6YGp/OiZWmLB5vrd7OTg+eSQHbcOY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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