Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '649b7f595a3ffc3dd02d4735e7497921f45524f28aa700f2cddf2e287dc2d2af' 
  AND token = 'zNveCtT6sgpORMDEoFRYyyy+MVVVidXcbp7GXr/oZ6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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