Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'bd1ff3da4659e44b2eb065d6af7a89fdccbc378ebbaeebeb5e418ad954d3553e' 
  AND token = '15sNHy9eF+i9K+KjIgPzAGUIJVufye2RB9RvjRgUCuo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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