Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eab237739c4e468cf5121a2fa952f3b92908cd8d64c27b270dadb29405534d47' 
  AND token = 'kFR8bw3kO+q5jKkRddZAmnBoqMLViEIOpkiD3cj4z0g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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