Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'bb2d2fd8f4f44435d98fa3681ea99129b31b00ae763706dd0830d87e96f2782b' 
  AND token = 'p2D4SoaavTZoFln9KMxgKe+TRvY4Y76ocJ0fS9P5LpI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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