Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16f72257c9ca2077fc96874978ed0656ceb1437aae3952e4ec7a4d4724364735' 
  AND token = 'CpKB0wkVK2iBiBnLDgfuUmMrCEMzB9sjLKiNRXNmp38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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