Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd9b3d2e34f002aa9b32cbb2348cb90439d72f9a622e6b2151ec9a68850a808f' 
  AND token = '/+0fFOzhSYwtgMj5NLV1SXp903OuvYvZp3rAb7j2WFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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