Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b350697181ae87b414ed2a3fe68ec5ecd9afa7f6b0b181d5390da125025a3844' 
  AND token = 'dV1N+TIF3kIw0anB3QOgqhjezujvobAaa+zp0eynYpc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00148

JSON explain

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