Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a6f8262a6f2570b67833944ecbe439e9e1fbe4df2c72215686711811d18367e3' 
  AND token = 'reqWxybIOPmBwK9kCTo/YzUkI17KY8xilxcAU1rV1Lc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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