Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '793ea0893c74fd5a245947d13692029a39b8f8140b02db8ef517d3679fb0eb37' 
  AND token = 'Co5K4HDr5fTy2RlviBfl4mLLaRyC2iXntHv+jO0tYGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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